Why your AI video looks choppy: frame rate explained

An AI video looks choppy when your clip's frame rate clashes with your timeline or export: many AI video models deliver 24 frames per second, and the moment that clip lands in a 30 fps edit, your software has to duplicate frames and motion becomes uneven. The model is rarely to blame, the mismatch is.

Below you will find what frame rate actually is, where the stutter comes from, and which settings to get right up front.

What is frame rate exactly?

Frame rate is the number of individual images shown per second, expressed in fps (frames per second). At 24 fps you see 24 still images every second, which your brain stitches together into fluid motion.

24 fps has been the cinema standard since the arrival of sound film, and that cadence is exactly what people recognise as "cinematic". 30 fps looks a little smoother and more businesslike, 60 fps looks fluid and immediate, like sports or gameplay. None of the three is objectively better, they simply feel different.

What frame rate do AI video models deliver?

Many AI video models deliver 24 fps, precisely the film standard. The open Wan 2.2 model, for example, generates 720p at 24 fps according to its official documentation. Some newer models deliver 30 fps or higher.

That is usually good news: your clip gets that cinematic cadence for free, without you doing anything. It only becomes a problem once you combine that footage with something else.

Why does motion stutter going from 24 to 30?

Judder happens because 24 and 30 do not divide neatly into each other. To spread 24 images across 30, software has to hold some frames longer than others, and that uneven distribution reads as a slight jolt, especially in shots where the camera moves.

The classic fix from the video world is called 3:2 pulldown: every four film frames get spread across five video frames to bring 24 fps up to the 29.97 fps of NTSC video (see Wikipedia). It works, but it is uneven by definition, and that unevenness is exactly what judder is.

Your editing software does something comparable the moment you drag a 24 fps clip into a 30 fps timeline. The more motion there is on screen, the more visible it gets.

How do you prevent choppy motion?

Set your timeline to the same frame rate as your clips and do not mix without a reason.

1. Pick one frame rate up front for your project and stick to it, from timeline to export.
2. Do not mix frame rates in a single edit. If you combine AI clips with your own footage, shoot that at 24 fps too.
3. Export at your footage's frame rate. According to YouTube Help, you should upload at the same frame rate you recorded in. Common frame rates are 24, 25, 30, 48, 50 and 60 fps.
4. Do not slow things down casually. Slow motion built from 24 fps footage almost always stutters, simply because there are too few frames to stretch.

When does frame interpolation help?

Frame interpolation is a technique that invents new in-between frames based on two existing images, lifting 24 fps to 48 or 60 fps, for instance. It can help if you want slow motion or genuinely need to hit a higher frame rate.

One caveat: those in-between frames are guessed, not rendered. With fast motion, fine detail or objects that overlap each other, you often get warped edges or a floaty look. Use it deliberately, not by default. A clip that stays cleanly at 24 fps often looks better than an interpolated clip at 60.

Steer motion in your prompt

The cheapest way to avoid stutter is to cram less motion into the same seconds. At 24 fps a model has only 24 images per second to build a movement with. A wild camera swing across two seconds produces big jumps between consecutive frames, and that reads as choppy.

• Describe calm, deliberate camera moves: a slow dolly or a gentle pan instead of a fast swing.
• Keep the number of moving elements in the scene limited.
• Ask for natural motion blur, which softens the transition between frames.

Try this in the video generator, or create a starting image first in the photo generator and bring it to life. Because you pay per render, it pays to describe your motion sharply up front rather than repair it afterwards.

Frequently asked questions

What is the best frame rate for an AI video?

24 fps in most cases: it is what many models deliver and it gives your clip a cinematic cadence. Go for 30 or 60 fps if your other footage is already there, or if your scene contains a lot of fast motion.

Why does my AI clip stutter in my edit?

Almost always because your timeline has a different frame rate than the clip, for example a 24 fps clip in a 30 fps project. Set your timeline to your clips' frame rate and export at that same rate.

Can I raise an AI video's frame rate afterwards?

Yes, with frame interpolation, which invents extra in-between frames. It works fine on calm motion, but fast action often produces artefacts. Keeping your frame rate consistent from start to finish is the better route.

Ready to make a clip that runs smoothly? Create an account and describe your motion calmly and deliberately.